AO4ELT5 Proceedings
Thirty Meter Telescope Laser Guide Star Facility Design Update
Trubey, Melissa (Thirty Meter Telescope International Observatory, Pasadena, California, USA), Boyer, Corinne (Thirty Meter Telescope International Observatory, Pasadena, California, USA), Ellerbroek, Brent (Thirty Meter Telescope International Observatory, Pasadena, California, USA), Wang, Lianqi (Thirty Meter Telescope International Observatory, Pasadena, California, USA), Wei, Kai (Institute of Optics and Electronics, Chengdu, China), Fan, Muwen (Institute of Optics and Electronics, Chengdu, China), Jiang, Changchun (Institute of Optics and Electronics, Chengdu, China), Li, Min (Institute of Optics and Electronics, Chengdu, China), Rui, Daoman (Institute of Optics and Electronics, Chengdu, China)
The Laser Guide Star Facility (LGSF), part of the adaptive optics (AO) system of the Thirty Meter Telescope (TMT), will generate multiple artificial laser guide stars, as required by the TMT Laser Guide Star AO systems. The LGSF will project several possible asterisms on sky, generated at first light by up to six 589 nm sodium lasers and situated on a platform behind the TMT primary mirror. The beams are then transported using beam transport optics around the elevation rotating structure of the telescope, to a center launch location situated behind the TMT secondary mirror. The asterisms are then generated and projected on sky through a laser launch telescope. The following sections will discuss the LGSF’s: overall design (II), key design updates (III), and the next steps for the TMT’s LGSF System (IV).
DOI: 10.26698/AO4ELT5.0109- Proceeding PDF
